| Verfasser | Häufigkeit |
| Sondermann, Fred A. |
6 |
| Olson, William C. |
5 |
| MacLellan, David S. |
4 |
| Bull, Sleeter |
1 |
| Longwell, John H. |
1 |
| McLellan, David |
1 |
| McLellan, David S. 1924- |
1 |
| Olson, Fred C. |
1 |
| Olson, Willard Clifford 1899-1978 |
1 |
| Olson, William C. 1920-2012 |
1 |
| Olson, William Clinton |
1 |
| Schonell, Fred Joyce |
1 |
| Sondermann, Fred A. 1923-1978 |
1 |
| Wall, William Douglas |
1 |